Columbia River Knife & Tool and noted knife designer Ken Onion are proud to introduce their first collaboration together, the Ripple K405 folding knife series. This knife is noteworthy for its exceptional manufacturing quality, premium stainless steel build, plus an almost unbelievable silky smooth and fast opening action thanks to the use of the IKBS internal knife ball bearing system. The Ripple K405KYP has a Razor-Sharp cutting edge, while the K405KXS has a combined Razor-Sharp and Triple-Point serrated cutting edge.